[OpenMP] Mark 'map-type modifiers in arbitrary position' done (llvm#133906)

I think llvm#90499 already implements support for the listed OpenMP 6.0
feature mentioned in the title. This patch just marks it done (for
C/C++).

Author: jtb20

clang/docs/OpenMPSupport.rst

@@ -456,7 +456,7 @@ implementation.
 +-------------------------------------------------------------+---------------------------+---------------------------+--------------------------------------------------------------------------+
 | ref modifier for map clauses                                | :none:`unclaimed`         | :none:`unclaimed`         |                                                                          |
 +-------------------------------------------------------------+---------------------------+---------------------------+--------------------------------------------------------------------------+
-| map-type modifiers in arbitrary position                    | :none:`unclaimed`         | :none:`unclaimed`         |                                                                          |
+| map-type modifiers in arbitrary position                    | :good:`done`              | :none:`unclaimed`         | https://github.com/llvm/llvm-project/pull/90499                          |
 +-------------------------------------------------------------+---------------------------+---------------------------+--------------------------------------------------------------------------+
 | Lift nesting restriction on concurrent loop                 | :good:`done`              | :none:`unclaimed`         | https://github.com/llvm/llvm-project/pull/125621                         |
 +-------------------------------------------------------------+---------------------------+---------------------------+--------------------------------------------------------------------------+